Valve for pneumatic tires



A. E. BRONSOAL.

VALVE FOR PNEUMATIC TIRES. APPLICATION FILED JUNE 20, 1918.

$1,426,350. Pat en tedAug'.22,1922.

'ADELBERT E. BRONSON, 0F CLEVELAND, OHIO.

VALVE FOR PNEUMATIC TIRES.

Specification of Letters Patent. Patented Aug. 1922.

Application filled June 20, 1918. Serial'Ho. M1911.

To all whom it may concern: v

Be it known that I, ADELBERT 'E. BRoNsoN, a citizen of the United States, residi' at Cleveland, in the county of Cuyahogaj tate of Ohio, have invented certain new and useful Improvements in Valves for Pneumatic Tires, of which the following is a specification. A.

The object of this invention is to improve the construction of valves now in use, in pneumatic tires, and is designed practically as an improvement on the construction shown in the patent to Greenwald No. 1,255,411, dated February 5th, 1918.. nuThe objects are to make a compact and service able valve which shall be a satisfactory manufacturing proposition and shall not be liable to injury. These and other objects will appear as the description proceeds:

In the drawings:

Fig. .1 is a cross-section through the assembled valve.

Fig. 2 is a view of the valve stem detached.

Fig. 3 is a plan view of the valve insides.

This invention relates to the mechanism known as the valve insides, which is designed to be placed in the well known valve 1 stout and not llable to mJury.

The valve stem or post is shown at 19 stem shown at 1 havinga reduced outer end or nipple 2, the inside of which is screw threaded as at 3 for the reception of the insides. Below the nipple the inside of the valve is provided with an inclined shoulder 4 communicating with a bore '5- leading through the stem.

The removable part of the valve or the insides comprises a barrel 6 screw threaded on its outer side to fit the threads 3 on the inside of the nipple, the-upper end of the barrel being bent at right angles to the main portion toform a flange 7 the central part of which is provided with an opening 8 throu h which air may pass into and out of the tire. From the opening 8 are formed diametrically positioned recesses 9. s The lower part of the barrel is extended a short distance to form a sleeve 10. Into the lower end of the barrel is adapted to be placed a plug or tube 11, the upper end of which contacts with a shoulder. 12 on the. inside of the barrel. Near the middle of the tube, but" preferably above the midway point, there is ormed a groove 13 havin a right angled shoulder 14 in whiclris aced a asket 15 of rubberor other suitab e materia adapted to be forced into intimate sealing contact with the shoulder 4. on screwing in of the barrel 6. The lower end of the sleeve 10 extends just over the entrance to the groove and is spun or pressed down into the groove to lock the two xpartsin position and serving also to hold the packing 15 in place. The

tube is a tightfit in the barrel and the spun down edge of the sleeve in the barrel makes av firm non-rotative connection between these two parts of the inside. At about the beginning of the groove there is formed on the inside of the tube a shoulder 16 serving as one of the seats for the spring to be described, the bore 17 of the tube bein accordin'gly reduced. The upper end 0 the tube is thus recessed to receive the lower portion of the spring, the upper portion of the spring being received in the barrel. The lower end of the tube is brought to a thin edge as at 18 to form a seat for the valve. By positioning the gasket about midway of the tube it is ossible to bring the valve members down into thetube and. away from the, shoulder and gasket where there will be a freer circulation for the air into and The body out ofthe valve mechanism. of the tube below the gasket is thick and and compromises a central portion ada ted to pass through the tube, the upper en beingenlarged as shown at-QO to form a guide for the spring and surmounted by an enlargement 21 forming a spring" abutment from which extends a flattened end 22 which, when the valve is assembled, passes through the opening 8 and is received in the recesses 9 whereby it may be used for rotating the barrel into and out of the nipple.

The upper end of the stem is preferably elongated to extend slightly above the top of the nipple. A light coil spring 23 surrounds the upper end of the stem belng seated between the shoulder 16 and the abutment 21 and serving to hold the valve'stem atv the upper limit of its movement.

On the lower end of the valve stem is formed a shoulder 24 and below the shoulder is seated the cupdikevalve 25 in the upper end which is placed a small ring gasket 26 which is held in contact with the lower edge 18 of the tube by the spring, the shoulder 24 acting as a stop for the valve.

When the parts have all been assembled in the position shown in Fig. 1,.the lowerthe interior of the barrel being provided with a shoulder, a tube, the upper end of which is received in the barrel against the shoulder, a groove in the exterior oi the tube at thelower edge of the barrel, the edge of the barrel being bent within the groove and cooperating with aniend wall of the groove, a gasket bearing against the shoulder on the valve stem, and valve mechanism located within the barrel and the tube and adapted to close the lower end of the tube.

2. In valve construction for pneumatic tires, the combination of a valve stemhaving an internally screw-threaded nipple and a shoulder below the nipple, a barrel having a screw-threaded engagement with the nipple, the interior of the barrel being provided with a shoulder, a tube, the upper end of which is received in the barrel against the shoulder, a groove in the exterior of the tube at the lower edge of the barrel, the edge of the barrel being bent within the groove, and co-operating with an end wall of the groove a gasket bearing against the shoulder on the valve stem, a valve post traversing the barrel and the tube, a spring within said parts and a valve on said post closing the lower end of said tube.

ADELBERT E. BRONSON. 

